The ornamental design for a cordless powertool, as shown and described.
FIG. 1 is a left side perspective view of the cordless power tool in accordance with our invention;
FIG. 2 is a right side perspective view thereof.
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a front view thereof;
FIG. 5 is a back view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines are for purposes of illustrating portions of the design that are not claimed. The broken lines and structure they depict form no part of the claimed design.